Search found 5 matches

by Saransk
Tue Oct 05, 2021 5:12 pm
Forum: Vox/Hiwatt Discussion
Topic: R.G. Keen - MIA?
Replies: 5
Views: 3829

Re: R.G. Keen - MIA?

So far no luck in either getting in touch with R.G. or finding a set of replacement boards he designed While it is possible to rebuild the original boards, it is one of the more painful exercises in self-inflicted pain I've experienced I never could have resurrected either one of the Berkeley 3 amps...
by Saransk
Sun Aug 22, 2021 8:29 pm
Forum: Vox/Hiwatt Discussion
Topic: R.G. Keen - MIA?
Replies: 5
Views: 3829

R.G. Keen - MIA?

Does anyone have a current email and/or other contact information for "Big Kahuna" of Thomas Vox amplifies - R.G. Keen His website for publications and parts, especially his redesigned circuit boards, http://www.thomas-vox-repair.com/ , is closed and there seems to be no current contact information ...
by Saransk
Wed Feb 27, 2019 4:59 pm
Forum: Vox/Hiwatt Discussion
Topic: VOX Reverb Transformer Information
Replies: 1
Views: 2298

VOX Reverb Transformer Information

I'm in the process of "restoring" a 2nd Thomas Vox Berkeley III head using RG Keen's marvelous circuit board and information. Had a dead reverb tank so the wiring to the tank and transformer were disconnected. (T3) While I have the schematic and such, I don't have a real picture/diagram of which wir...
by Saransk
Tue Jan 22, 2019 1:19 am
Forum: Fender Discussion
Topic: 1970 Silverface Bassman - Hum in Bass Channel only
Replies: 15
Views: 4099

Re: 1970 Silverface Bassman - Hum in Bass Channel only

It is definitely 60 Hz Well the tube socket is new The "doghouse" caps are new The amp is extremely quiet with tube V1 (Bass channel) pulled New set of input jacks - all match the quiet Normal channel Ground plate not "floating" Voltages within 5% of schematic on V1 - both cathodes especially good. ...
by Saransk
Sun Jan 20, 2019 4:34 am
Forum: Fender Discussion
Topic: 1970 Silverface Bassman - Hum in Bass Channel only
Replies: 15
Views: 4099

1970 Silverface Bassman - Hum in Bass Channel only

Resurrecting a 1970 Silverface Bassman New caps, new plate resistors, new Classic Tone Power Transformer, etc. Power amp redone as an AA165/AA864 - Preamp AB165 Everything works well except.... Hum in the Bass Channel - doesn't change with plugging guitar in or increasing volume. Hum Disappears if V...